The new firmware works perfectly. With ICOM it is a pleasure to install firmware in less than a minute. Which is far from being the case for Yaesu for example. For owners of R8600, I strongly recommend the purchase
CS-R8600 software which allows you to do absolutely everything that is possible on this receiver and which is a real plus due to its flexibility of use.
My IC-R8600 serves as a reference for frequency classification by groups thanks to the ease and speed of frequency management with the software